Changes between Version 3 and Version 4 of PDAFomi_init_dim_obs_l

Timestamp:

Apr 29, 2024, 2:12:42 PM (3 weeks ago)

Author:

lnerger

Comment:

--

PDAFomi_init_dim_obs_l

@@ -15 +15 @@
     TYPE(obs_l), INTENT(inout) :: thisobs_l  ! Data type with local observation
     REAL, INTENT(in) :: coords_l(:)          ! Coordinates of current local analysis domain
-    INTEGER, INTENT(in) :: locweight         ! Type of localization function
-    REAL, INTENT(in) :: cradius              ! Localization cut-off radius
-    REAL, INTENT(in) :: sradius              ! Support radius of localization function
+    INTEGER, INTENT(in) :: locweight         ! Type of localization function [scalar or vector, see below]
+    REAL, INTENT(in) :: cradius              ! Localization cut-off radius [scalar or vector, see below]
+    REAL, INTENT(in) :: sradius              ! Support radius of localization function [scalar or vector, see below]
     INTEGER, INTENT(inout) :: dim_obs_l      ! Local dimension of current observation vector
 }}}
@@ -36 +36 @@
 }}}
 Here, the size `cradius` and `sradius` has to be equal to `thisobs%ncoords`.
+
+== Setting different weight functs for horizontal and vertical directions ==
+
+In case of the non-isotropic localization and can specify different weight functions for the vertical and horizontal directions. This should be particularly useful when using the 2D+1D factorized localization (see exaplanation of [wiki:OMI_observation_modules#thisobsdisttype possible choices of thisobs%disttype >]). The interface accepting separate weight functions is
+{{{
+    INTEGER, INTENT(in) :: locweight(2)         ! Type of localization function [scalar or vector, see below]
+    REAL, INTENT(in) :: cradius(:)              ! Localization radius
+    REAL, INTENT(in) :: sradius(:)              ! Support radius of localization function
+
+}}}
+Now, `locweight(1)` specifies the localization function in the horizontal direction, while `locweight(2)` specifies the localization function in the vertical direction (see the [wiki:OMI_observation_modules#init_dim_obs_l_OBSTYPE the table of choices of localization functions]).